SOP For calibration of UV cabinet is described in this post which you can follow in the section of the General Industry SOP.

OBJECTIVE
To calibrate the equipment for reliable and accurate results.
SCOPE
This procedure is applicable to the UV Cabinet, installed in the quality control department.
RESPONSIBILITY
QC Analyst
ACCOUNTABILITY
Manager Quality Control
PROCEDURE
For 254 nm
  • Prepare a 0.04% w/v solution of sodium salicylate in ethanol (95%)
  • Apply 5µl of this solution on Silica gel G with a diameter of about 5mm and examine visually.
  • The distance between the lamp and the plate under examination used in a Pharmacopeial test should not exceed the distance used to carry out the above test.
  • The lamp should be capable of revealing without doubt a standard spot of sodium salicylate.
For 366 nm
  • Prepare a 0.2% w/v solution of sodium salicylate in ethanol (95%)
  • Apply 5µl of this solution on Silica gel with a diameter of about 5mm and examine visually.
  • The distance between the lamp and the plate under examination used in a Pharmacopeial test should not exceed the distance used to carry out the above test.
  • The lamp should be capable of revealing without doubt a standard spot of sodium salicylate.
Frequency: Once in 3 months.